Control Valve Trim Design

Standards Council of Canada

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Effective flow area vs physical flow area of an orifice plate

Have you ever noticed that when a flow goes through an orifice plate, the fluid stream converges downstream of the orifice hole? i.e. the effective flow area (downstream) is smaller than the physical flow area (upstream).

Question: How to calculate that effective flow area? (Gerald)

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Standards Council of Canada

Control Valve Trim Design

Effective flow area vs physical flow area of an orifice plate

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